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arm64: dts: apple: j274: Expose PCI node for the Ethernet MAC address

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At the moment, all the Minis running Linux have the same MAC
address (00:10:18:00:00:00), which is a bit annoying.

Expose the PCI node corresponding to the Ethernet device, and
declare a 'local-mac-address' property. The bootloader will update
it (m1n1 already has the required feature). And if it doesn't, then
the default value is already present in the DT.

This relies on forcing the bus number for each port so that the
endpoints connected to them are correctly numbered (and keeps dtc
quiet).

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Marc Zyngier 2021-10-25 22:10:18 +01:00 committed by Hector Martin
parent 128888a6fd
commit e1bebf9781
1 changed files with 23 additions and 0 deletions
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23
arch/arm64/boot/dts/apple/t8103-j274.dts
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@ -17,6 +17,7 @@
aliases {
serial0 = &serial0;
ethernet0 = &ethernet0;
};
chosen {
@ -43,3 +44,25 @@
&serial0 {
status = "okay";
};
/*
* Force the bus number assignments so that we can declare some of the
* on-board devices and properties that are populated by the bootloader
* (such as MAC addresses).
*/
&port00 {
bus-range = <1 1>;
};
&port01 {
bus-range = <2 2>;
};
&port02 {
bus-range = <3 3>;
ethernet0: pci@0,0 {
reg = <0x30000 0x0 0x0 0x0 0x0>;
/* To be filled by the loader */
local-mac-address = [00 10 18 00 00 00];
};
};